CN210977429U - Device for injecting, extracting and discharging - Google Patents
Device for injecting, extracting and discharging Download PDFInfo
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- CN210977429U CN210977429U CN201921316764.6U CN201921316764U CN210977429U CN 210977429 U CN210977429 U CN 210977429U CN 201921316764 U CN201921316764 U CN 201921316764U CN 210977429 U CN210977429 U CN 210977429U
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Abstract
The utility model relates to an oil field oil production instrument technical field, concretely relates to device under adopting on notes. The device comprises a bridge plug, wherein the bridge plug is set in a sleeve to separate an upper water injection layer and a lower oil production layer when in use, and the middle part of the bridge plug is provided with a central pipe which is communicated up and down; the oil pumping pipe column comprises an oil pumping pump and a sealing insertion pipe which are in sealing connection in the vertical direction, the sealing insertion pipe is used for being inserted into the central pipe from top to bottom in a sealing mode, an annular water injection channel located between the oil pumping pipe column and the sleeve is formed above the bridge plug and used for injecting water into a water injection layer, and an oil pumping channel communicated with an oil production layer for pumping oil is formed in the oil pumping pipe column. The annular water injection channel and the oil pumping channel are independent from each other, and water injection and oil pumping are also independent from each other, so that the annular water injection channel and the oil pumping channel can be independently carried out or simultaneously carried out, and one well of the oil production well has multiple purposes.
Description
Technical Field
The utility model relates to an oil field oil production instrument technical field, concretely relates to device under adopting on notes.
Background
The well arrangement method is suitable for blocks with clear oil-water layer positions and perfect injection-production well patterns, and in actual exploitation, because of complex oil-water relation, different fault blocks or the same fault block often have no uniform oil-water interface between different layers, and a regular water injection well pattern cannot be formed. If water injection wells are arranged corresponding to each fault block or each layer, the cost is high. Even in the regions with perfect water injection well patterns, the serious faults of some water injection wells lead to low-efficiency development, and the problem of overhigh investment cost of overhaul of the water injection wells also exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a device under adopting on annotating for solve the higher technical problem of injection well arrangement or repair cost in the prior art.
In order to achieve the purpose, the utility model discloses annotate and adopt following technical scheme down the device:
an injection top-production bottom-production device comprises
The bridge plug is set in the casing pipe to separate an upper water injection layer from a lower oil production layer when in use, and the middle part of the bridge plug is provided with a central pipe which is communicated up and down;
the oil pumping pipe column comprises an oil well pump and a sealing insertion pipe which are hermetically connected in the vertical direction, the sealing insertion pipe is used for being hermetically inserted into a central pipe from top to bottom, so that an annular water injection channel between the oil pumping pipe column and the sleeve is formed above the bridge plug, the annular water injection channel is used for injecting water into a water injection layer, and an oil pumping channel communicated with an oil production layer for pumping oil is formed in the oil pumping pipe column.
The beneficial effects of the above technical scheme are: utilize the bridge plug to separate water injection layer and oil reservoir, sealed intubate and the sealed cooperation of bridge plug center tube, make the top of bridge plug form the annular water injection passageway that is located between oil pumping tubular column and the sleeve pipe, form the oil pumping passageway with the oil recovery layer intercommunication in the oil pumping tubular column, annular water injection passageway and oil pumping passageway are independent each other, water injection and oil pumping are also independent each other, both can go on alone, also can go on simultaneously, a well of oil recovery well is multi-purpose has been realized, can utilize current oil recovery well to carry out the water injection, need not arrange the water injection well in addition again or restore existing water injection well, the cost is lower. Meanwhile, the sealing insertion tube is sleeved in the central tube in a sealing manner, so that the whole oil pumping pipe column can be taken out from the central tube of the bridge plug when the oil well pump is periodically overhauled and maintained or repaired due to faults, and the oil well pump is convenient to overhaul and maintain.
Further, the pumping string further comprises an insertion tube centralizer used for being matched with the inner wall of the casing when the sealing insertion tube is lowered, and the insertion tube centralizer is used for guiding the lowering of the sealing insertion tube to be aligned with the central tube. The intubation tube centralizer can be used for preventing the sealed intubation tube from deviating to a large extent along the radial direction, and the sealed intubation tube is conveniently and stably inserted into the central tube.
Further, the cannula centralizer sets up between oil-well pump and sealed cannula. The cannula centralizer is closer to the sealed cannula, and the centralizing effect is better.
Further, the outer diameter of the lower end of the sealing cannula is matched with the inner diameter of the central tube, so that the sealing cannula is in sealing fit with the inner wall of the central tube after being forcibly installed in the central tube. The sealing mode of the two is simple and convenient to operate.
Furthermore, a sealing ring is arranged on the outer peripheral surface of the lower end of the sealed insertion pipe or at a corresponding position in the inner wall surface of the central pipe, so that the sealing fit of the sealing ring and the central pipe is ensured. The sealing ring is added, so that the sealing matching effect of the sealing insertion pipe and the central pipe is better.
Further, the bridge plug comprises a rubber cylinder sleeved outside the central pipe, and two slips with slip teeth facing opposite directions are arranged on the upper side and the lower side of the rubber cylinder so as to anchor the bridge plug in the casing in a bidirectional mode along the up-down direction. This device is when carrying out water injection and oil recovery simultaneously, the bridging plug can receive the water pressure that comes from the upper portion and come from the oil pressure of lower part, the water pressure size can change along with going on of water injection work, it is the same to make the bridging plug receive water pressure and oil pressure size be difficult to guarantee, the bridging plug is difficult to the equilibrium in the ascending pressurized of upper and lower side, the bridging plug both has the trend of downstream, also has the trend of rebound, the stability of bridging plug seat has been fully guaranteed to the bridging plug that adopts two-way anchoring, the stability of having guaranteed water injection and oil recovery work is gone on.
Drawings
FIG. 1 is a schematic structural view of an embodiment of an upper injection and lower extraction device of the present invention;
FIG. 2 is a schematic view of the bridge plug in the embodiment of the top-injection and bottom-extraction device of the present invention during setting;
description of reference numerals: 1-bridge plug, 11-central tube, 2-sealing insertion tube, 3-insertion tube centralizer, 4-oil pump, 5-bridge plug setting device, 6-oil pumping pipe column, 7-water injection layer, 8-oil production layer and 9-casing.
Detailed Description
The following further describes the embodiments of the present invention with reference to the attached drawings:
the utility model discloses annotate and adopt the concrete embodiment of lower device:
as shown in fig. 1 and 2, the injection-production-down device comprises a bridge plug 1, wherein the bridge plug 1 is set in a casing 9 to separate an upper water injection layer 7 and a lower oil production layer 8 when in use, and the middle part of the bridge plug 1 is provided with a central pipe 11 which is penetrated up and down, and a rubber cylinder assembly (not shown in the figure) and a slip assembly (not shown in the figure) which are positioned outside the central pipe 11; the oil pumping pipe column 6 comprises an oil well pump 4 and a sealing insertion pipe 2 which are connected in a sealing mode in the vertical direction, the sealing insertion pipe 2 is used for being inserted into a central pipe 11 from top to bottom in a sealing mode, an annular water injection channel located between the oil pumping pipe column 6 and a sleeve 9 is formed above a bridge plug 1 and used for injecting water into a water injection layer 7, and an oil pumping channel communicated with an oil production layer 8 for pumping oil is formed in the oil pumping pipe column 6.
Specifically, as shown in fig. 1, the oil pumping pipe column 6 includes an oil well pump 4 and a sealing insertion pipe 2 which are hermetically connected in the up-down direction, the sealing insertion pipe 2 is in threaded connection with the lower end of the oil well pump 4, so as to avoid the sealing insertion pipe 2 from generating large-amplitude deflection in the radial direction when the oil well pump is lowered, the sealing insertion pipe 2 is conveniently and stably inserted into the central pipe 11, an insertion pipe centralizer 3 which is matched with the inner wall of the casing when the sealing insertion pipe 2 is lowered is arranged between the oil well pump 4 and the sealing insertion pipe 2, and the insertion pipe centralizer 3 can guide the lowering of the sealing insertion pipe 2 to; the pipe inserting centralizer 3 is in threaded connection with the outer side of the upper portion of the sealed pipe inserting 2, so that the pipe inserting centralizer 3 is closer to the sealed pipe inserting 2, and the centralizing effect is better. In other embodiments, the cannula centralizer may also be disposed above the pump.
The external diameter size of 2 lower extremes of sealed intubate and the internal diameter size adaptation of center tube 11 to make sealed intubate 2 adorn by force behind center tube 11 with the inner wall sealing cooperation of center tube 11, the size adaptation has made things convenient for the sealed cooperation of sealed intubate 2 with center tube 11, and in order to further guarantee the stability of sealed intubate 2 and center tube 11 seal, dispose the sealing washer in the outer peripheral face of 2 lower extremes of sealed intubate, the sealing washer is rubber materials, it makes sealed intubate 2 better with the sealed cooperation effect of center tube 11 to increase the sealing washer. In other embodiments, the sealing ring may be disposed on the inner wall surface of the central tube at a corresponding position, and the sealing ring may remain on the central tube after the sealing cannula is separated from the central tube.
Since the sealed cannula 2 and the cannula centralizer 3 matched with the sealed cannula in the embodiment are both in the prior art, the detailed description will not be repeated in the embodiment. Of course, the structure of the sealing insertion pipe 2 can refer to the sealing insertion pipe for water injection in separate zones of oil-water wells disclosed in the patent document of the chinese utility model with the publication number CN 203499625U.
In this embodiment, the bridge plug 1 is a drillable bridge plug, and as shown in fig. 2, the drillable bridge plug is set by a bridge plug setting device 5 when in use, specifically, the upper portion of the bridge plug 1 is provided with a pin groove connected with the bridge plug setting device 5, the upper portion of the bridge plug 1 is connected with an inner pipe of the bridge plug setting device 5 by a pin, during setting, the bridge plug setting device 5 is connected to the oil pumping pipe column 6, after the bridge plug 1 is lowered to a downhole set position, a steel ball is put into the oil pumping pipe column 6 onto the bridge plug setting device 5, hydraulic pressure is pumped into the oil pumping pipe column 6 at a wellhead, the hydraulic pressure is gradually increased until slips in the bridge plug 1 are opened, the slips are set on the casing wall, the rubber cylinder of the bridge plug 1 is compressed and then expanded, a water injection layer 7 above the packing and a production layer 8 below the packing are sealed, and the setting action of the bridge plug 1 is completed. And continuously increasing the hydraulic pressure until a pin connected with the bridge plug 1 and the bridge plug setting device 5 is sheared, observing whether the pump pressure changes, if the pump pressure drops, proving that the setting is in place, simultaneously lifting the oil pumping pipe column 6, observing whether the suspended weight changes, and if the suspended weight does not change, proving that the bridge plug 1 realizes stable setting and can be pulled out of the oil pumping pipe column 6. And after the well mouth stops injecting and pumping, a drilling and fishing integrated tool can be put down, the drilling and grinding can be carried out on the part, which can be drilled, outside the bridge plug 1, and after the drilling and grinding are finished, the central tube 11 is fished out to finish the deblocking of the bridge plug 1. In other embodiments, the bridge plug may also be a permanent bridge plug.
Since the bridge plug 1 and the bridge plug setting device 5 for setting in cooperation therewith are prior art, detailed description thereof will not be repeated in this embodiment. Of course, the drillable bridge plug disclosed in the chinese utility model patent with the publication number CN207686670U may be used for the specific application process.
Because this device is when carrying out water injection and oil recovery simultaneously, bridge plug 1 can receive the water pressure that comes from the upper portion and come from the oil pressure of lower part, the water pressure size can change along with the going on of water injection work, make bridge plug 1 receive water pressure and oil pressure size be difficult to guarantee the same, bridge plug 1 is difficult to the balanced in the ascending pressure in upper and lower direction, bridge plug 1 both can have the trend of downward movement, also can the trend of upward movement, therefore in this embodiment, two slips that the slips orientation is opposite are arranged to the upper and lower both sides of packing element in bridge plug 1, in order to anchor bridge plug 1 in the sleeve pipe along upper and lower direction two-way, also can guarantee to seal well when the pressure changes up and down, the stability of bridge plug 1 seat seal has fully been guaranteed, also guaranteed the stable of water injection and oil recovery work and gone on. In other embodiments, only one slip or two slips facing the same direction can be arranged in the bridge plug, so that the bridge plug can be anchored in one direction.
The utility model discloses when putting into production and putting down the device when using, the upper end of bridging plug 1 links to each other through the pin with bridging plug setting device 5 inner tube, after going into to setting for the position along with oil pumping pipe column 6, beat hydraulic pressure at the well head and sit and seal, after sitting and sealing and accomplishing, lift oil pumping pipe column 6, set gradually oil-well pump 4 on oil pumping pipe column 6, connect sealed intubate 2 and intubate centralizer 3, the outer peripheral face of sealed intubate 2 disposes the sealing washer, transfer oil pumping pipe column 6 to sealed intubate 2 and seal and insert to the center tube 11 of bridging plug 1, then, pump truck through the well head beats to the pressure in oil pumping pipe column 6 and tests the sealing, verify the leakproofness of sealed intubate 2 and center tube 11, after testing and sealing and accomplishing, go into piston, sucker rod and polished rod in oil pumping pipe column 6 down, the pump back adjustment scour protection apart from, the oil-well pump, 4 works, take out the oil of oil production zone 8 along, the water can be injected into the water injection layer 7 by utilizing the annular water injection channel at the upper end of the bridge plug 1.
When the well mouth stops injecting and pumping, the oil pumping pipe column 6 can be directly taken out, then the drilling and fishing integrated tool is put into the pipe column, the bridge plug 1 is unsealed, and the bridge plug is taken out along with the pipe column.
In this embodiment, utilize the annular water injection passageway on bridge plug 1 upper portion to realize the water injection to water injection layer 7, utilize oil pumping tubular column 6 can follow oil production layer 8 oil pumping, water injection and oil pumping are independent each other, the two both can go on alone, also can go on simultaneously, a well of oil production well is multi-purpose has been realized, and simultaneously, because sealed intubate 2 seals the plug bush in center tube 11, also make oil-well pump 4 when the periodic maintenance is maintained or is maintained because of the trouble, can take out oil pumping tubular column 6 is whole from bridge plug 1's center tube 11, the maintenance of oil-well pump 4 has been made things convenient for.
In this embodiment, a sealing ring is disposed on the outer peripheral surface of the lower end of the sealed cannula or at a corresponding position on the inner wall surface of the central tube to ensure the sealing fit between the two. In other embodiments, the sealing ring may not be provided when the sealing cannula is in sealing engagement with the central tube.
In this embodiment, a casing centralizer is disposed between the pumping string and the sealing casing. The intubation tube centralizer can be used for preventing the sealed intubation tube from deflecting along the radial direction, and the use stability of the sealed intubation tube is ensured. In other embodiments, the cannula centralizer may not be provided.
Claims (6)
1. The utility model provides a device under adopting on notes which characterized in that: comprises that
The bridge plug is set in the casing pipe to separate an upper water injection layer from a lower oil production layer when in use, and the middle part of the bridge plug is provided with a central pipe which is communicated up and down;
the oil pumping pipe column comprises an oil well pump and a sealing insertion pipe which are hermetically connected in the vertical direction, the sealing insertion pipe is used for being hermetically inserted into a central pipe from top to bottom, so that an annular water injection channel between the oil pumping pipe column and the sleeve is formed above the bridge plug, the annular water injection channel is used for injecting water into a water injection layer, and an oil pumping channel communicated with an oil production layer for pumping oil is formed in the oil pumping pipe column.
2. The bottom-of-line injection device according to claim 1, wherein: the oil pumping string further comprises an insertion pipe centralizer used for being matched with the inner wall of the casing when the sealing insertion pipe is lowered, and the insertion pipe centralizer is used for guiding the lowering of the sealing insertion pipe to be aligned with the central pipe.
3. The bottom-of-line injection device according to claim 2, wherein: the intubation tube centralizer is arranged between the oil well pump and the sealing intubation tube.
4. The bottom-of-line injection apparatus according to any one of claims 1 to 3, wherein: the outer diameter of the lower end of the sealing insertion pipe is matched with the inner diameter of the central pipe, so that the sealing insertion pipe is in sealing fit with the inner wall of the central pipe after being forcibly installed in the central pipe.
5. The bottom-of-line injection device according to claim 4, wherein: and a sealing ring is arranged on the peripheral surface of the lower end of the sealing insertion pipe or at a corresponding position in the inner wall surface of the central pipe so as to ensure the sealing fit of the sealing insertion pipe and the central pipe.
6. The bottom-of-line injection apparatus according to any one of claims 1 to 3, wherein: the bridge plug comprises a rubber cylinder sleeved outside the central pipe, and two slips with slip teeth facing opposite directions are arranged on the upper side and the lower side of the rubber cylinder so as to anchor the bridge plug in the casing in a two-way mode along the up-down direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921316764.6U CN210977429U (en) | 2019-08-14 | 2019-08-14 | Device for injecting, extracting and discharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921316764.6U CN210977429U (en) | 2019-08-14 | 2019-08-14 | Device for injecting, extracting and discharging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210977429U true CN210977429U (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921316764.6U Active CN210977429U (en) | 2019-08-14 | 2019-08-14 | Device for injecting, extracting and discharging |
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| CN (1) | CN210977429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117231167A (en) * | 2023-11-09 | 2023-12-15 | 四川圣诺油气工程技术服务有限公司 | Releasing structure of acid liquid dumping cylinder |
-
2019
- 2019-08-14 CN CN201921316764.6U patent/CN210977429U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117231167A (en) * | 2023-11-09 | 2023-12-15 | 四川圣诺油气工程技术服务有限公司 | Releasing structure of acid liquid dumping cylinder |
| CN117231167B (en) * | 2023-11-09 | 2024-02-02 | 四川圣诺油气工程技术服务有限公司 | Releasing structure of acid liquid dumping cylinder |
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